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[BugFix]: Creating a PostgresBaseEngineSpec so changes to the Postgre… (#4224)
* [BugFix]: Creating a PostgresBaseEngineSpec so changes to the PostgresEngineSpec don't affect every subclass * Empty engine for abstract Engine
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@ -280,8 +280,10 @@ class BaseEngineSpec(object):
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return {}
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class PostgresEngineSpec(BaseEngineSpec):
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engine = 'postgresql'
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class PostgresBaseEngineSpec(BaseEngineSpec):
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""" Abstract class for Postgres 'like' databases """
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engine = ''
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time_grains = (
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Grain('Time Column', _('Time Column'), '{col}'),
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@ -311,6 +313,10 @@ class PostgresEngineSpec(BaseEngineSpec):
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def convert_dttm(cls, target_type, dttm):
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return "'{}'".format(dttm.strftime('%Y-%m-%d %H:%M:%S'))
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class PostgresEngineSpec(PostgresBaseEngineSpec):
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engine = 'postgresql'
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@classmethod
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def get_table_names(cls, schema, inspector):
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"""Need to consider foreign tables for PostgreSQL"""
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@ -319,6 +325,35 @@ class PostgresEngineSpec(BaseEngineSpec):
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return sorted(tables)
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class VerticaEngineSpec(PostgresBaseEngineSpec):
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engine = 'vertica'
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class RedshiftEngineSpec(PostgresBaseEngineSpec):
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engine = 'redshift'
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class OracleEngineSpec(PostgresBaseEngineSpec):
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engine = 'oracle'
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time_grains = (
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Grain('Time Column', _('Time Column'), '{col}'),
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Grain('minute', _('minute'), "TRUNC(TO_DATE({col}), 'MI')"),
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Grain('hour', _('hour'), "TRUNC(TO_DATE({col}), 'HH')"),
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Grain('day', _('day'), "TRUNC(TO_DATE({col}), 'DDD')"),
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Grain('week', _('week'), "TRUNC(TO_DATE({col}), 'WW')"),
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Grain('month', _('month'), "TRUNC(TO_DATE({col}), 'MONTH')"),
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Grain('quarter', _('quarter'), "TRUNC(TO_DATE({col}), 'Q')"),
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Grain('year', _('year'), "TRUNC(TO_DATE({col}), 'YEAR')"),
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)
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@classmethod
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def convert_dttm(cls, target_type, dttm):
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return (
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"""TO_TIMESTAMP('{}', 'YYYY-MM-DD"T"HH24:MI:SS.ff6')"""
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).format(dttm.isoformat())
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class Db2EngineSpec(BaseEngineSpec):
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engine = 'ibm_db_sa'
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time_grains = (
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@ -1046,42 +1081,6 @@ class MssqlEngineSpec(BaseEngineSpec):
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return "CONVERT(DATETIME, '{}', 126)".format(dttm.isoformat())
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class RedshiftEngineSpec(PostgresEngineSpec):
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engine = 'redshift'
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class OracleEngineSpec(PostgresEngineSpec):
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engine = 'oracle'
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time_grains = (
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Grain('Time Column', _('Time Column'), '{col}'),
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Grain('minute', _('minute'),
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"TRUNC(TO_DATE({col}), 'MI')"),
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Grain('hour', _('hour'),
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"TRUNC(TO_DATE({col}), 'HH')"),
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Grain('day', _('day'),
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"TRUNC(TO_DATE({col}), 'DDD')"),
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Grain('week', _('week'),
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"TRUNC(TO_DATE({col}), 'WW')"),
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Grain('month', _('month'),
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"TRUNC(TO_DATE({col}), 'MONTH')"),
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Grain('quarter', _('quarter'),
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"TRUNC(TO_DATE({col}), 'Q')"),
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Grain('year', _('year'),
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"TRUNC(TO_DATE({col}), 'YEAR')"),
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)
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@classmethod
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def convert_dttm(cls, target_type, dttm):
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return (
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"""TO_TIMESTAMP('{}', 'YYYY-MM-DD"T"HH24:MI:SS.ff6')"""
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).format(dttm.isoformat())
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class VerticaEngineSpec(PostgresEngineSpec):
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engine = 'vertica'
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class AthenaEngineSpec(BaseEngineSpec):
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engine = 'awsathena'
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